Henkel Lite-Lok 4002

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Description for Henkel Lite-Lok 4002

An ultraviolet light curable adhesive that has the fast cure capability of traditional UV cure acrylates and the toughness and low shrinkage of an epoxy. Low viscosity enables easy dispensing for bubble - free potting applications.

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Brand	Bondmaster
Application Type	Bond, Encapsulate, Seal, Adhesive: Instant Adhesives, Pot
1 Part or 2 Part	1-Part
Material Form	Liquid
Manufacturer	Henkel
Chemistry	Urethane Epoxy
Cure Method	UV
Cure Time (min)	0.03 to 0.08
Viscosity (cPs)	200, Low
Color	Light Amber, Clear
Durability	Toughness

Best Practices for Henkel Lite-Lok 4002

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Technical Data for Henkel Lite-Lok 4002

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Overview

Application Type
- Adhesive - Bond
- Adhesive : Instant Adhesives
- Pottant / Encapsulant - Encapsulate, Pot
- Sealant - Seal
1 Part or 2 Part
- 1-Part
Material Form
- Liquid
Chemistry
- Epoxy - Urethane Epoxy
Application Method
- Dispenser - Piston pump dispensing system, Pressure pot
Cure Method
- UV / Visible Light - UV
Color
- Clear / Transparent - Clear
- Red - Light Amber
Brand
- Bondmaster

Specifications

Cure Specs

Cure Time (min)	0.03 to 0.08
Viscosity (cPs)	200, Low	Test Method
Linear Shrinkage (%)	Low

Bond Strength

Tensile Strength (psi)	1,100

Hardness

Durability	Toughness
Shore D Hardness	60
Elongation (%)	50

Other Properties

Specific Gravity	1.070
Flash Point (°F)	>194.0
% Solids (%)	100

Business Information

Shelf Life Details	Uncured
Shelf Life Temperature (°F)	81
Shelf Life (mon)	6

Best Practices for Henkel Lite-Lok 4002

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1. Surface Preparation
  
  LITE -LOK® 4002 bonds well to many untreated surfaces. However, adhesion is often improved by surface preparation before bonding. The surface should be free of contamination such as dirt, dust, grease or oil. An alcohol wipe is suitable for cleaning most surfaces. Optimum strength is obtained by abrading the surface followed by a solvent wipe to remove any loose particles. Polyolefins must be corona treated, or flame treated before bonding.
2. Application
  
  LITE -LOK® 4002 is best applied by extruding the product onto the substrate to be sealed or bonded. Sufficient product must be applied to seal all gaps, and completely coat the part to be bonded or sealed. After dispensing onto the part, the product should be cured as soon as possible to prevent any prereaction with ambient light.
  
  LITE -LOK® 4002 may be applied via a pressure pot, or piston pump dispensing system. All fittings and tubing used in the dispensing system must be opaque to light. If the product is transferred from a large container to a smaller hand held dispensing bottle, that bottle must be light impenetrable. (see Storage & Handling).
3. Curing
  
  Optimum cure is obtained when LITE -LOK® 4002 is exposed to UV light in the spectral range of 250 thru 350 nanometers. The time needed for curing is a combination of many factors. Some of these are: The thicker the substrate, the longer the exposure time needed for curing. The more UV light absorbing that the substrate is, the longer the exposure time needed for curing. The lower that the intensity of the UV light source is, the longer the exposure time needed for curing. The farther the distance of the product from the UV light source, the longer the exposure time needed for curing.
  
  Typically, LITE-LOK® 4002 will cure after a UV light exposure from two to five seconds, when cured at or near the focal point of a high intensity UV light source.
  
  After UV exposure, the product will continue to cure and increase in strength for 24 hours.
4. Clean-Up
  
  Unreacted material can be cleaned up using acetone. If skin contact occurs, the affected area should be washed thoroughly with soap and water. Eye protection against UV light should be worn whenever the product is being used. Eye contact should be treated by thoroughly washing with water followed by medical attention. Aprons should also be used. Adequate ventilation is necessary to prevent inhalation of vapors.
Comparable Materials for Henkel Lite-Lok 4002

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Spec Engine^® Results
- Light-Weld 3012(Dymax)
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- E-54106(MicroCoat Technologies)
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